New insights reveal that how potatoes are prepared influences their health impact, allowing them to be enjoyed healthily with appropriate cooking methods and pairing, even for those managing blood sugar levels.
Potatoes can still fit into a healthy diet, despite their reputation as a starchy food best avoided by anyone watching their weight or blood sugar. Writing in HuffPost, with guidance from certified dietitians, the piece argues that potatoes offer more than carbohydrates alone: they also provide vitamin C, vitamin B6, potassium and fibre, particularly when the skin is eaten. Toby Smithson said potatoes are a strong source of potassium, a mineral linked to heart health and healthy blood pressure, while Barbara Ruhs described them as a nutritious source of quality carbohydrates and a modest amount of plant protein.
How potatoes are cooked makes a major difference to their effect on blood sugar. Healthline notes that baked potatoes can have a high glycaemic index, while boiling and then cooling them can lower that measure by increasing resistant starch, a form of starch that is digested more slowly. WebMD also says that chilling boiled potatoes can raise resistant starch levels and improve blood sugar control. Carolyn O’Neil said that reheating cooled potatoes does not remove that benefit, which is why a cold potato salad can produce a gentler glucose response than a freshly cooked serving.
That makes preparation as important as portion size. The article says potato salad made from boiled, cooled potatoes, especially when combined with acids, fats and fibre, can have a lower glycaemic index than hot potatoes or fries. That is one reason dietitians say potatoes can be included in meals for people with diabetes, provided they are paired sensibly with non-starchy vegetables and lean protein. Smithson said potatoes can occupy the carbohydrate portion of a diabetes-friendly plate, where roughly a quarter is reserved for carb foods and the rest for vegetables and protein.
Fibre is another reason potatoes deserve a place on the table. According to the dietitians cited, a medium potato contains around 3 to 4 grams of fibre, with much of it in the skin and the rest in the flesh. The skin contains mostly insoluble fibre, which supports bowel movement, while the flesh contains soluble fibre that may help slow glucose absorption and support cholesterol control. Healthline and WebMD both say potatoes are nutrient-dense, and that their benefits are greatest when they are eaten with the skin and prepared in ways that preserve their natural starch and micronutrients.
Disclaimer: This content is for informational purposes only and is not intended to be a substitute for professional medical judgment, advice, diagnosis, or treatment.
